Half double crochet is the stitch you didn’t know you needed. It’s taller than single crochet (so it works up faster) but shorter than double crochet (so it’s denser and warmer). It’s the Goldilocks stitch – just right. I use it for hats, blankets, scarves, and especially beanies. Once you learn it, you’ll find yourself reaching for it constantly. In this guide, I’ll teach you exactly how to make a half double crochet stitch, how to turn rows (the turning chain does NOT count as a stitch – different from double crochet!), how to count your stitches, and common mistakes. Plus, 10 projects that use only half double crochet, so you can practice until the motion becomes automatic.
What is half double crochet? (And why it’s so useful)
Half double crochet (abbreviated “hdc”) is exactly what it sounds like – halfway between single crochet and double crochet. It’s about 1.5 times the height of a single crochet. Here’s why you’ll love it:
- Faster than single crochet – you’ll finish projects in less time.
- Denser than double crochet – warmer fabric, perfect for winter items.
- Great for hats and beanies – the perfect height for a warm, snug fit.
- Soft, textured fabric – has a lovely, slightly bumpy texture.
You’ll see half double crochet in hat patterns, baby blankets, scarves, and cowls. Once you learn it, you’ll use it all the time.
Step‑by‑step: how to half double crochet
Let’s walk through the half double crochet stitch slowly. You’ll need a hook and yarn, with a foundation chain ready (see chain stitch guide if needed).
To make another hdc, repeat steps 1‑5 in the next stitch. Keep going until you reach the end of the row.
Working half double crochet into a foundation chain
When you work your first row of hdc into a chain, you need to skip the first 2 chains. Why? Those 2 chains become the turning chain for the next row. For hdc, the turning chain is 2 chains (not 1 like sc, and not 3 like dc).
The rule: If you chain 21, you will half double crochet in the 3rd chain from the hook, then each chain after that. The first 2 skipped chains count as the turning chain for row 1. So you’ll have 19 hdc in the row.
Patterns will say: “Ch 21, hdc in 3rd ch from hook and each ch across.” That’s your cue.
When you insert your hook into the chain, go under both top loops of the V (the same as sc and dc).
Turning rows: the turning chain does NOT count as a stitch
This is where half double crochet is different from double crochet. For hdc, the turning chain (ch 2) does NOT count as a stitch. It’s just there to bring your yarn to the correct height.
Remember: ch 2, then hdc in the first stitch
Unlike double crochet, where you skip the first stitch because the turning chain counts, with hdc you work directly into the first stitch. This can be confusing at first – my students often get it backwards. Write a sticky note: “hdc turning chain does NOT count.”
How to count half double crochet stitches
Counting hdc is similar to sc – each stitch looks like a V at the top. The turning chain (ch 2) is NOT counted as a stitch, so ignore it. Count the V’s.
To count rows, look at the small horizontal bars (the “bars” of the hdc). Each row has a distinct ridge. Or use a row counter app on your phone.
Tension tricks for even half double crochet
- Don’t pull the yarn too tight after pulling through all 3 loops. The stitch should be relaxed.
- Keep the loops on the hook consistent. When you pull up a loop after inserting, bring it to the same height as the previous stitches.
- If your hdc is stiff and hard, go up a hook size. Hdc should have a soft, flexible drape.
- If your hdc is loose and holey, go down a hook size. You don’t want gaps in a beanie or bag.
8 common half double crochet mistakes (and fixes)
Half double crochet variations: BLO, FLO, herringbone
Once you’ve mastered basic hdc, try these easy variations.
Half double crochet in back loop only (hdc BLO)
Work as usual, but insert your hook under only the back loop of the V. Creates a ribbed texture, perfect for hat brims and cuffs.
Half double crochet in front loop only (hdc FLO)
Insert under only the front loop. Creates a ridge on the back. Less common but useful for some patterns.
Herringbone half double crochet (herringbone hdc)
A twist on the basic hdc that creates a V‑shaped texture. Instead of pulling through all 3 loops normally, you insert the hook into the next stitch, then pull the first loop through the second loop on the hook before completing the stitch. It’s a bit fiddly but very pretty.
For tutorials on these variations, see our hdc variations guide.
10 projects you can make with only half double crochet
Half double crochet is versatile and fast. Here are 10 projects that use only hdc (and chains).
Half Double Crochet Project Ideas
All hdc onlyStart with the washcloth – it’s small and useful. Then try the beanie. You’ll be surprised how quickly you master this stitch.
Practice swatch pattern
Here’s a simple swatch to practice your half double crochet. Make it, then unravel and make it again until your stitches are even.
Half Double Crochet Practice Swatch
PracticeYou’ve mastered the Goldilocks stitch
Half double crochet is a beautiful, practical stitch that deserves more love. Now that you know it, you can make hats that are warm but not stiff, blankets that are cosy but not heavy, and bags that are sturdy but not rigid. Practice on a washcloth, then make a beanie. Once you’re comfortable, combine hdc with sc and dc to create textured patterns. The crochet world is now even bigger.
